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3、 The optimization of electrolyte composition and the production process of lithium-ion batteries require electrolyte to maintain capacity and extend battery life:

1. Suppress the reaction between the positive electrode material and the electrolyte,

2. By controlling the appropriate specific surface area and conducting surface treatments such as coating, film formation, and surface chemical reactions on carbon negative electrode materials, the surface structure of negative electrode materials can be improved;

3. By optimizing lithium salts, solvents, and additives, the conductivity of the electrolyte is improved and polarization is reduced,

4、 After the preparation of battery materials is completed, the production process of lithium-ion batteries enters the assembly stage. At this time, attention should be paid to:

1. The negative capacity is slightly greater than the positive capacity,

2. After winding the positive and negative electrodes and the diaphragm, the particle size of the gap between the positive and negative plates and the diaphragm shall not exceed 0.5mm, and the deviation between the upper and lower parts shall not exceed 0.5mm.

5、 When conducting volumetric testing, it is advisable to use low-speed charging according to Chinese standards, usually at 0.2C.

Overall, in the process manufacturing stage, attention should be paid to the following proportional relationships: electrode surface to electrode compaction density, negative electrode excess rate, formula process, and the applicable amount of electrolyte to positive and negative electrode combinations.

In the production process of lithium-ion batteries, each step takes a different time. Generally, the time for ingredients, baking, and formation is long, ranging from about 10 hours at most to two days and two nights at most; Other processes are relatively fast, with an average of 5 to 6 hours. The entire lithium-ion battery production process takes about 15 days.

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